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  <title>The QuickHashIntStringHash class</title>

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 <h1 class="title">The QuickHashIntStringHash class</h1>
 

 <div class="partintro"><p class="verinfo">(PECL quickhash &gt;= Unknown)</p>


  <div class="section" id="quickhashintstringhash.intro">
   <h2 class="title">简介</h2>
   <p class="para">
    This class wraps around a hash containing integer numbers, where the
    values are strings. Hashes are also available as implementation of the
    ArrayAccess interface.
   </p>
   <p class="para">
    Hashes can also be iterated over with foreach as the Iterator interface is
    implemented as well. The order of which elements are returned in is not
    guaranteed.
   </p>
  </div>


  <div class="section" id="quickhashintstringhash.synopsis">
   <h2 class="title">类摘要</h2>


   <div class="classsynopsis">
    <div class="ooclass"></div>


    <div class="classsynopsisinfo">
     <span class="ooclass">
      <strong class="classname">QuickHashIntStringHash</strong>
     </span>
     {</div>

    <div class="classsynopsisinfo classsynopsisinfo_comment">/* Constants */</div>
    <div class="fieldsynopsis">
     <span class="modifier">const</span>
     <span class="type">integer</span>
      <var class="fieldsynopsis_varname"><a href="class.quickhashintstringhash.html#quickhashintstringhash.constants.check-for-dupes"><var class="varname">CHECK_FOR_DUPES</var></a></var>
     <span class="initializer"> = 1</span>
    ;</div>

    <div class="fieldsynopsis">
     <span class="modifier">const</span>
     <span class="type">integer</span>
      <var class="fieldsynopsis_varname"><a href="class.quickhashintstringhash.html#quickhashintstringhash.constants.do-not-use-zend-alloc"><var class="varname">DO_NOT_USE_ZEND_ALLOC</var></a></var>
     <span class="initializer"> = 2</span>
    ;</div>

    <div class="fieldsynopsis">
     <span class="modifier">const</span>
     <span class="type">integer</span>
      <var class="fieldsynopsis_varname"><a href="class.quickhashintstringhash.html#quickhashintstringhash.constants.hasher-no-hash"><var class="varname">HASHER_NO_HASH</var></a></var>
     <span class="initializer"> = 256</span>
    ;</div>

    <div class="fieldsynopsis">
     <span class="modifier">const</span>
     <span class="type">integer</span>
      <var class="fieldsynopsis_varname"><a href="class.quickhashintstringhash.html#quickhashintstringhash.constants.hasher-jenkins1"><var class="varname">HASHER_JENKINS1</var></a></var>
     <span class="initializer"> = 512</span>
    ;</div>

    <div class="fieldsynopsis">
     <span class="modifier">const</span>
     <span class="type">integer</span>
      <var class="fieldsynopsis_varname"><a href="class.quickhashintstringhash.html#quickhashintstringhash.constants.hasher-jenkins2"><var class="varname">HASHER_JENKINS2</var></a></var>
     <span class="initializer"> = 1024</span>
    ;</div>

    
    <div class="classsynopsisinfo classsynopsisinfo_comment">/* Methods */</div>
    <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="type">bool</span><span class="methodname"><a href="quickhashintstringhash.add.html" class="methodname">add</a></span>
    ( <span class="methodparam"><span class="type">int</span> <code class="parameter">$key</code></span>
   , <span class="methodparam"><span class="type">string</span> <code class="parameter">$value</code></span>
   )</div>
<div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="methodname"><a href="quickhashintstringhash.construct.html" class="methodname">__construct</a></span>
    ( <span class="methodparam"><span class="type">int</span> <code class="parameter">$size</code></span>
   [, <span class="methodparam"><span class="type">int</span> <code class="parameter">$options</code><span class="initializer"> = 0</span></span>
  ] )</div>
<div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="type">bool</span><span class="methodname"><a href="quickhashintstringhash.delete.html" class="methodname">delete</a></span>
    ( <span class="methodparam"><span class="type">int</span> <code class="parameter">$key</code></span>
   )</div>
<div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="type">bool</span><span class="methodname"><a href="quickhashintstringhash.exists.html" class="methodname">exists</a></span>
    ( <span class="methodparam"><span class="type">int</span> <code class="parameter">$key</code></span>
   )</div>
<div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="type">mixed</span><span class="methodname"><a href="quickhashintstringhash.get.html" class="methodname">get</a></span>
    ( <span class="methodparam"><span class="type">int</span> <code class="parameter">$key</code></span>
   )</div>
<div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="type">int</span><span class="methodname"><a href="quickhashintstringhash.getsize.html" class="methodname">getSize</a></span> ( <span class="methodparam">void</span>
   )</div>
<div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="modifier">static</span> <span class="type">QuickHashIntStringHash</span><span class="methodname"><a href="quickhashintstringhash.loadfromfile.html" class="methodname">loadFromFile</a></span>
    ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$filename</code></span>
   [, <span class="methodparam"><span class="type">int</span> <code class="parameter">$size</code><span class="initializer"> = 0</span></span>
   [, <span class="methodparam"><span class="type">int</span> <code class="parameter">$options</code><span class="initializer"> = 0</span></span>
  ]] )</div>
<div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="modifier">static</span> <span class="type">QuickHashIntStringHash</span><span class="methodname"><a href="quickhashintstringhash.loadfromstring.html" class="methodname">loadFromString</a></span>
    ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$contents</code></span>
   [, <span class="methodparam"><span class="type">int</span> <code class="parameter">$size</code><span class="initializer"> = 0</span></span>
   [, <span class="methodparam"><span class="type">int</span> <code class="parameter">$options</code><span class="initializer"> = 0</span></span>
  ]] )</div>
<div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="type">void</span><span class="methodname"><a href="quickhashintstringhash.savetofile.html" class="methodname">saveToFile</a></span>
    ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$filename</code></span>
   )</div>
<div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="type">string</span><span class="methodname"><a href="quickhashintstringhash.savetostring.html" class="methodname">saveToString</a></span> ( <span class="methodparam">void</span>
   )</div>
<div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="type">int</span><span class="methodname"><a href="quickhashintstringhash.set.html" class="methodname">set</a></span>
    ( <span class="methodparam"><span class="type">int</span> <code class="parameter">$key</code></span>
   , <span class="methodparam"><span class="type">string</span> <code class="parameter">$value</code></span>
   )</div>
<div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="type">bool</span><span class="methodname"><a href="quickhashintstringhash.update.html" class="methodname">update</a></span>
    ( <span class="methodparam"><span class="type">int</span> <code class="parameter">$key</code></span>
   , <span class="methodparam"><span class="type">string</span> <code class="parameter">$value</code></span>
   )</div>

   }</div>


  </div>
  

  <div class="section" id="quickhashintstringhash.constants">
   <h2 class="title">预定义常量</h2>
   <dl>


    
     <dt id="quickhashintstringhash.constants.check-for-dupes"><strong><code>QuickHashIntStringHash::CHECK_FOR_DUPES</code></strong></dt>

     <dd>

      <p class="para">If enabled, adding duplicate elements to a set (through either add() or
      loadFromFile()) will result in those elements to be dropped from the
      set. This will take up extra time, so only used when it is required.</p>
     </dd>

    

    
     <dt id="quickhashintstringhash.constants.do-not-use-zend-alloc"><strong><code>QuickHashIntStringHash::DO_NOT_USE_ZEND_ALLOC</code></strong></dt>

     <dd>

      <p class="para">Disables the use of PHP&#039;s internal memory manager for internal
      set structures. With this option enabled, internal allocations will not
      count towards the memory_limit settings.</p>
     </dd>

    

    
     <dt id="quickhashintstringhash.constants.hasher-no-hash"><strong><code>QuickHashIntStringHash::HASHER_NO_HASH</code></strong></dt>

     <dd>

      <p class="para">Selects to not use a hashing function, but merely use a modulo to
      find the bucket list index. This is not faster than normal hashing, and
      gives more collisions.</p>
     </dd>

    

    
     <dt id="quickhashintstringhash.constants.hasher-jenkins1"><strong><code>QuickHashIntStringHash::HASHER_JENKINS1</code></strong></dt>

     <dd>

      <p class="para">This is the default hashing function to turn the integer hashes
      into bucket list indexes.</p>
     </dd>

    

    
     <dt id="quickhashintstringhash.constants.hasher-jenkins2"><strong><code>QuickHashIntStringHash::HASHER_JENKINS2</code></strong></dt>

     <dd>

      <p class="para">Selects a variant hashing algorithm.</p>
     </dd>

    

   </dl>

  </div>



 </div>

 





















































































<h2>Table of Contents</h2><ul class="chunklist chunklist_reference"><li><a href="quickhashintstringhash.add.html">QuickHashIntStringHash::add</a> — This method adds a new entry to the hash</li><li><a href="quickhashintstringhash.construct.html">QuickHashIntStringHash::__construct</a> — Creates a new QuickHashIntStringHash object</li><li><a href="quickhashintstringhash.delete.html">QuickHashIntStringHash::delete</a> — This method deletes am entry from the hash</li><li><a href="quickhashintstringhash.exists.html">QuickHashIntStringHash::exists</a> — This method checks whether a key is part of the hash</li><li><a href="quickhashintstringhash.get.html">QuickHashIntStringHash::get</a> — This method retrieves a value from the hash by its key</li><li><a href="quickhashintstringhash.getsize.html">QuickHashIntStringHash::getSize</a> — Returns the number of elements in the hash</li><li><a href="quickhashintstringhash.loadfromfile.html">QuickHashIntStringHash::loadFromFile</a> — This factory method creates a hash from a file</li><li><a href="quickhashintstringhash.loadfromstring.html">QuickHashIntStringHash::loadFromString</a> — This factory method creates a hash from a string</li><li><a href="quickhashintstringhash.savetofile.html">QuickHashIntStringHash::saveToFile</a> — This method stores an in-memory hash to disk</li><li><a href="quickhashintstringhash.savetostring.html">QuickHashIntStringHash::saveToString</a> — This method returns a serialized version of the hash</li><li><a href="quickhashintstringhash.set.html">QuickHashIntStringHash::set</a> — This method updates an entry in the hash with a new value, or
  adds a new one if the entry doesn't exist</li><li><a href="quickhashintstringhash.update.html">QuickHashIntStringHash::update</a> — This method updates an entry in the hash with a new value</li></ul>
</div>
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